Home / 827,210.70-1,238,742.45-661,322.70

Finding the Fourth Proportional to 827,210.70, 1,238,742.45 and 661,322.70

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Solution

The fourth proportional to 827,210.70, 1,238,742.45 and 661,322.70 is: 990,326.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,210.70 : 1,238,742.45 = 661,322.70 : x
  2. Step 2: Convert to fraction form
    827,210.70/1,238,742.45 = 661,322.70/x
  3. Step 3: Cross multiply
    827,210.70x = 1,238,742.45 × 661,322.70
  4. Step 4: Simplify right side
    827,210.70x = 819,208,501,638.62
  5. Step 5: Solve for x
    x = 819,208,501,638.62/827,210.70
  6. Step 6: Final answer
    x = 990,326.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.